Thread-parter for looms.



v PatentedV july l5, i902. E. S. STIMPSUN.

THREAD PARTER FDR LOOMS.

(Application med Jani. 1s. 1902.)

(No Model.)

" UNITED STATES PATENT OFFICE.

EDWARD S. STIMPSON, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

THREAD-PARTER FOR LOONIS.

SPECIFICATION-forming part of Letters Patent No. 704,715, dated July 15, 1902. Application filed January 16, 1902L Serial No. 90,014. (No model.)

To all whom t may concern:

Beit known that I, EDWARD S. STIMPSON, a citizen of the United States, kresiding at Hope dale, in vthe county of'Worcester and State of Massachusetts, have invented an Improvement in Thread-Parters for Looms, of which the following description, 'in connection with the accompanying drawings, is a specication, like characters on the drawings representing like parts.

This invention has for its object the production of a novel thread-parter for looms provided with automatic fllling-replenishing mechanism, the function of the thread-parter being to part the filling end between the cloth and the replenishing mechanism on the first pick after replenishment. Y

In United States Patent No. 630,236, dated August l, 1899, a thread -parter is shown mounted on the templeY andl so arranged that its actionis limited to each illingreplenishment, and my presentinvention relates more particularly to that type of thread-'parten as will more fullyappear hereinafter.

Figure l is a transverse sec'tional'view' of a portion of a loom, taken betweenthe replenishing mechanism and the templeon which the thread-parteiI is mounted, one embodiment of my invention being illustrated in normal condition. Fig. 2 is an enlarged detail, in side elevation, of the novel parting means shown in Fig. l locked in normal inoperative position, the releasing device being omitted. Fig. 3 is a similar view, but showing the parting means'unlocked andin position to operate upon theilling end. Fig.

' et is a top orplan view of the same, but With the thread-parter retracted; and Fig. 5 is an inner side view of the locking and setting ratchet to be described.

The lay A3, breast-beam A40, filling-feeder F, (see dotted lines, Fig. 1,) andthe transferrer f', and the controlling or operating rock-shaft d are andmay be substantially as,

thread parier or cutter O, inserted in the slotted part of pod and ear, are and may be substantially as in Patent No. 360,236. As thereinshown, the parter C is slotted at its front end at'2 to straddle blade a', presenting tWo arms c c2, each havinga downturned hook-like end c3, Fig. 3, va spring d normally tending to project the hooked end through the slot a and to elevate it. O'ne end 3 of the spring'bears against the bar'B, the latter having a stud d2 to receive the coil of the spring, While a projection c5 on the depending heel c4 of the parter C is engaged by the free end cl3 of the spring, the spring moving the part-er out into operative position (see.

Fig. l3) when permitted to act. Stops 5 limit such movement, anda shoe 6 slides and rocks on the under side of the ear b, as in Patent No. 630,236; but one of the stops 5 has a lateralvst'ud 7 secured thereto, on which is fulcrumed an actuating-pam p to cooperate with a ratchet-wheel r', mounted to rotate on a stud h2, extended from the ear b, the ratchet being thus bodilymovable with the temple, While the pawl p is bodily movable with the thread-partei, each operating movement of the latter causingthe pawl to engage and rotate the ratchet one tooth. The projecting movement of the thread-parter by the spring d operatively positions it, While its operating or retracting movement is opposite thereto, from the position shown in Fig. 3 to that shown in Figs. l and 2. A plunger-stop r', Working in a socket b3 in the pod of the tem# ple, prevents overrunning or retrograde rotation of the ratchet,a spring SX (see dotted lines, Figs. 2 and 3) controlling the stop.

The ratchet r (shown separately in Fig. 5) has secured to it or forming a part thereof a radially-extended lump rx on its inner face, constituting a detent and movable in a circular path crossed by the spring d,`sothat when the detent is in the position 'shown in Fig. 2

such position. Vhen the thread-partei' is locked, the detent is on dead-center relative to the spring, so that the stress of the latter cannot throw the detent out of engagement therewith. On its outer face the ratchet is provided with a laterally-extended startingtooth r2 for a purpose to be described and located out of the path of the pawl p, the relative angular positions of the detent and starting-tooth being shown clearly in Figs. 2 and 3.

Referring to Fig. l, the temple-stand A has two lateral studs d10 du thereon, which pass through transverse slots lO and 12 in a releasing device (shown as an arm m) extended in parallelism with the side of the stand and having at its front end a depending ear m in the path of movement of the lateral head X21 of an arm d20, secured to the rock-shaft d. The free end of a spring S5, Fig. l, secured at 35 to the stand A, bears on the top of the arm m and normally retains it in the position shown, the inner end of the arm having a downturned hook 'm2 and an upturned cam portion m3 beyond it, the hook lying above the starting-tooth r2. When the controllingshaft d' is rocked in the direction of arrow `50, Fig. l, to eect a change of filling in wellknown manner, the head of the arm d20 acts on the ear m to lift the outer end of the arm m and to depress the hook m2 onto the top of the starting-tooth r2. The forward beat o`f the lay acts through the heel B3 to move the temple outward against its spring S, and as soon as such outward stroke carries the ratchet fr' far enough to withdraw the tooth r2 from beneath the hook m2 the spring S5 acts vto throw the hook down into the path of the edge of said tooth, so that on the return or inward stroke of the temple the hook will engage the tooth, and as spring S is much strongerthan spring d the ratchet 1^ will be rotated in the direction of arrow 60, Fig. 2, carrying the detent TX from the position there shown into the position illust-rated in Fig. 8. The spring d is thus released from control by the detent and immediately slides the thread-parter C toward the lay and upward into the position shown in Fig. 3, with its heel e4 in advance of the temple-heel B3. As the lay thereafter beats up it first engages the heel c4 and moves it forward, retracting and depressing the hooked end c3, so that the filling end laid on the pick following replenishment will be caught and drawn across the blade et and severed before the temple-heel is engaged by the lay. At the same time pawlp engages and turns the ratchet r one tooth, and when the lay moves back the temple returns to normal position, and thereafter the spring d again projects the threadparter to operative position. This continues until sufficient successive operations of the parter have through the pawl p turned the ratchet until the detent rx again engages and resumes control of the spring d, thereby holding the parter retracted, as in Fig. 2. As the starting-tooth r2 is turned from the position shown in Fig. 3 it will be finally brought into its normal position, Figs. l and 2, beneath the hook m2, and should the arm m have failed for any reason to return to its normal position the said tooth will act on the cam'm3 to lift the hooked end into the position shown in Fig. l. The operation of the means for releasing the thread-parter from control of the detent is effected by the action conjointly of lling, replenishing,and the reciprocation of the temple, as will be manifest from the foregoing.

The several successive operations of the thread-parter after it has been released insure the engagement of the filling end thereby and severance should the thread-parter fail to sever it properly the first time.

Various changes and modifications may be made in the construction and arrangement herein shown and described Without departing from the spirit and scope of my invention.

Having described my invention, what I claim, and desire to secure by Letters Patont, is-

l. A loom-temple provided with athreadparter, means to actuate it and means to 0peratively position it, a detent to normally engage the latter means and maintain the thread-parter inoperative, a device to release such means, and means governed by a *plurality of successive operations of the threadparter to eect rengagement of the positioning means and the detent.

2. A loom-temple provided with a threadparter, means to actuate it and means to operatively position it, a rotatable detent to normally engage the latter means and maintain said thread-parter inoperative, a device to rotate the detent and release such means, and means governed by a plurality of successive actuations of the thread-parter to eect movement of the detent into rengagement with the positioning means.

3. A loom-temple provided with a threadparter, means to actuate it and a spring to operatively position it, a detent to normally engage the .spring and maintain the threadparter inoperative, a device to disengage the spring from the detent, and means actuated by a plurality of successive operations of the thread-parter to restore the spring to the control of the detent.

' 1. A loom-temple provided with a threadparter, means to project it into operative position and means to retract and operate it, a detent to normally engage the 'projecting means and maintain the threadparter retracted and inoperative, a device to disengage said means-and the detent, and means governed by a plurality of successive retractive movements of the thread-parter to restore the projecting means to the control of the detent.

5. A reciprocating temple provided with a relatively movable thread-parter, actuating means therefor to part the filling end in advance of the outward stroke of the temple, a detent to normally maintain the thread-parter inoperative, a device operative by or through the inward stroke of the temple to release the thread-parter from the control of the detent, and means governed by a plurality of suc- ICO IIO

'cessive operationsof the thread-parter to l restore the same to the control of the dete'nt` i 6.1 A reciprocating-temple provided with a AIO relatively movable thread-parter, a spring to move it into operative position, a detent to engage the spring and maintain the threadparter retracted, means to actuate the'latter, a device fixed relatively to the temple, to effect disengagement of'thedetent and spring en theinward stroke of the temple, and means actuated by a plurality of successive operations Vof the thread-parter to effect rengagey ment of the spring and detent.

7. A loom temple provided with a relatively movable thread-parter, means to operatively position it, and means to actuate it, a rotatable ratchet mounted on the temple and having a detent to engage and maintain the positioning meansinoperative, an actuating-pawl for the ratchet, moved at each operation of the thread-parter to rotate the ratchet step by step, and a device to effect initial relative movement of the ratchet to release the poeratively position it, a rotatable ratchet onl the temple, an actuating-pand therefor movable with the thread-partemmeans governed by the ratchet to engage the spring and retain the thread-parter inoperative, means to act-nate the latter when operatively positioned, a predetermined number of successive operations rotating the ratchet to `eiect engagement of the spring and the retaining means, to hold the thread-parter inoperative, and a device to engage and rotate the ratchet from normal position, to thereby release lthe spring Aand permit it to operatively position the thread-parter.

9. In a loom provided Withiilling-replenishing mechanism, a controller therefor, a threadparter, a spring to operatively position it, means to normallyV engage the spring and maintain the thread-parter inoperative, a device rendered operative by or through the action of the controller, to disengage the spring and said means, and means to effect rengagement of the spring, with the threadparter inoperative, aft-er a predetermined number of successive operations ofthe latter.

l0. In a loom provided with filling-replenishing mechanism, a controller therefor, the lay, a thread-parter having a heel adapted when operatively positioned to be engaged by the lay, to operate the parter, means to operatively position the thread-parter, a detent to engage said means and normally maintain the parter inoperative, a device rendered operative by the controller upon lling replenishment to effect movement of the detent to release the positioning means, and means'to restore the latter to the control of the detent after a predetermined number of operations of the thread-parter by the lay. l

ll. In a loom provided with filling-replenishing mechanism, a controller therefor, a reciprocating temple, its fixed stand, a threadparter movable on the temple, to be engaged and actuated by a moving part of the loom, means to operatively position the threadparter, a detent mounted on the temple to normally engage said means and retain the parter inoperative, a releasing device carried by the temple-stand and rendered operative by the controller upon lling replenishment, to effect disengagement of the positioning means and the detent'by or through the inward stroke of the temple, and means to restore the positioning means to the control of the detent -by ,or through a predetermined number of operations of the thread-parter.

12. In a loom provided With filling-replenishing mechanism, a reciprocating temple provided with a relatively movable threadparter, a spring to move it into operative position, a temple-stand, a ratchet rotatably mounted on the temple and having an attached detent to engage the spring and lock the parter in inoperative position, an actuating-pavvl for the ratchet, to rotate the same step by step when the thread-parter is operated, a predetermined number of successive operations by a moving part of the loom causing engagement of the spring by the detent, a lug on the ratchet, and a normally inoper= ative hooked arm on the temple-stand, rendered operative upon filling replenishment to engage the lug on the outward stroke of the temple, the return strokev of the latter causing rotation of the ratchet, through enp gagement of the arm and lug, to release the spring fromrthe control of the detent.

- 13. In a loom provided with automatic filling-replenishing mechanism, a reciprocating temple provided' with a slidably-mounted thread-parter having a heel adapted to be engaged and actuated by a moving part of the loom, a spring to operatively position the thread-parter, a detent movably mounted on the temple and normally engaging the spring, to retain the parter inoperative, means operated conjointly by the reciprocation of the temple and filling replenishment, to move the detent out of engagement With and 'release the spring, and means actuated by a plurality of successive operations of the thread-parter,

to move the detent into rengagement with the spring and retain the parter inoperative.

14; -In a loom provided with automatic filling-replenishing mechanism, a reciprocating temple provided with a slidably mounted spring controlled thread parter adapted,

Vwhen operatively positioned, to be actuated by a moving part of the loom', a detent rotatably mounted on the temple and normally locking the parter from operation, a ratchet loo iog

rotatable with the detentan aetuating-pawl In testimony whereof I have signed my operated by a plurality of successive operaname to this specification in the presence of 1o tions of the parter to rotate the ratchet and.y two subscribing Witnesses. v eect the locking of the thread-parter by the v 5 detent, and means operated conjointly by EDWARD S' bHMPSON filling replenishment and the reeiproeaton of Witnesses: the temple, to move the detentand unlock GEORGE OTIS DRAPER, the thread-partei'. f ERNEST W. WOOD. 

